Nut-lock.



J. F. NICHOLSON. NUT LOCK.

APPLIOATION FILED IBB.3, 1910.

960,999; Patented June 7,1910.

ATES

NUT-LOCK.

T 0 all whom it may concern:

Be it known that I, JOHN F. NIoHOLsoN, a citizen of the United States,residing at Somerset, in the county of Somerset and State ofPennsylvania, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in nut locks andcomprises various details of construction and combinations andarangements of parts which will be hereinafter fully described and thenspecifically defined in the appended claims.

I illustrate my invention in the accompanying drawings, in which Figure1 is a longitudinal sectional view through one end of the bolt and nutsthereon. Fig. 2 is a sectional view on line 22 of Fig. 1. Fig. 3 is abottom plan view of a nut having a cam groove therein. Fig. 4 is adetail perspective view of one of the nuts, and Fig. 5 is a detail viewof the spring connected to the outer nut. Fig. 6 is a view in elevationshowing the nuts locked together.

Reference now being had to the details of the drawings by letter, Adesignates a bolt having a threaded portion B, which threaded portionhas longitudinal channels E formed therein.

F designates a nut having a central threaded bore and an interiorlythreaded extension shell F provided with a series of longitudinal slotsI-I, each of which registers with a radial channel I formed in the outerface of the nut F.

Independently mounted sliding keys, designated by letter K and providedwith lugs K and K are provided, one for each of said channels in whichthey are adapted to have a sliding longitudinal movement, the lugs K atthe inner ends of the keys being adapted to register with and enter theslots H and channels E to hold the nut from rotation upon the bolt.

N designates a nut having a central aperture adapted to fit over saidshell and is provided upon its inner face with a cam out- Specificationof Letters Patent.

Application filed. February 3, 1910.

Patented June 7, 1910.

Serial No. 541,670.

lined rib N adapted to engage between the lugs K and K of said keys and,as said nut N is rotated upon the shell, to cause said keys to move intoor out of locking relation by means of said cam rib bearing against oneor another of the lugs K or K For instance, in the event of the portionsO of said cam rib being moved against the lug K the key carrying saidlug will be moved out of the slot E of the bolt and, when the portionsof the rib intermediate the parts 0 bear against the lug K by the rotarymovement of the nut N, the keys will be thrown into a locked position.As there are three of said keys shown in the drawings, they will all bemoved simultaneously into or out of locked relation.

Radial ribs Q project from the outer face of the nut F and are adaptedto engage radial grooves R formed in the inner face of the nut N andserve normally to prevent rotation of one nut relative to the other. Acoiled spring S is seated in a recess N in the outer face of the nut Nand held in place by means of a washer T, which is recessed out andmounted upon the shank portion of the extension F and bears against theend of the recess N and the recess in said washer, and being providedfor the purpose of'normally holding the nuts in locked relation at thesame time allowing the nuts to be moved into or out of said lockedrelation.

What I claim to be new is 1. A nut lock comprising, in combination witha bolt having a threaded portion with longitudinal channels intersectingthe threads, a nut having an integral shell interiorly threaded andprovided with radial slots, keys movable in said slots and provided withlaterally projecting lugs and adapted to engage the channels of thebolt, a nut fitted Over said shell, means for securing the nut upon thelatter and provided with a cam Outlined rib upon its face adapted toengage with a lug upon each of said keys whereby, as said rib is turned,the keys may be simultaneously moved into or out of locking relation.

2. A nut lock comprising, in combination with a bolt having a threadedportion with longitudinal channels intersecting the threads, a nuthaving an integral shell interiorly threaded and provided with radialslots, keys movable in said slots and provided with laterally projectinglugs and adapted to engage the channels of the bolt, a nut fitted oversaid shell, means for securing the nut upon the latter and provided witha cam outlined rib upon its face adapted to engage with a lug upon eachof said keys whereby, as said rib is turned, the keys may besimultaneously moved into or out of locking relation, a coiled springfastened to said nut provided with the rib and adapted to allow the nutto turn.

3. A nut lock comprising, in combination with a bolt having a threadedportion with longitudinal channels intersecting the threads, a nuthaving an integral shell interiorly threaded and provided with radialslots, keys movable in said slots and provided with laterally projectinglugs and adapted to engage the channels of the bolt, a nut fitted oversaid shell, means for securing the nut upon the latter and provided witha cam outlined rib upon its face adapted to engage with a lug upon eachof said keys whereby,

as said rib is turned, the keys may be simultaneously moved into or outof locking relation, ribs projecting from the outer face of the slottednut and adapted to engage grooves in the adjacent face of the nut havingsaid cam outlined rib.

4. A nut lock comprising, in combination with a bolt having a threadedportion with longitudinal channels intersecting the threads, a nuthaving an integral shell interiorly threaded and provided with radialslots, keys movable in said slots and provided with laterally projectinglugs and adapted to engage the channels of the bolt, a nut fitted oversaid shell and provided with a cam outlined rib upon its face adapted toengage with a lug upon each of said keys whereby, as said rib is turned,the keys may be moved into or out of locking relation, said nut providedwith the cam outlined rib having a recess in its outer face, a coiledspring seated. therein and engaging said shell, and a Washer engagingsaid spring.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

JOHN F. NICHOLSON.

Witnesses:

A. F. DIGKEY, A. J COLEMAN.

